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(No Model.)

G. A. MASON.

. v ENGRAVERS TOOL. N0. 408.498. Patented Aug. 6, 1 889..

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UNITED STATES PATENT OFFICE.

GEORGE A. MASON, OF NVASHINGTON, DISTRICT OF COLUMBIA, ASSIGNOR TO JOHNSELLERS & SONS, OF NENV YORK, N. Y.

ENGRAVERS TOOL.

SPECIFICATION forming part of Letters Patent No. 408,498, dated August6, 1889.

Application filed May 17, 1889. Serial No. 311,129- (No model.)

To all whom it may concern:

Be it known that I, GEORGE A. Mason, a citizen of the United States,residing at Washington, in the District of Columbia, have inventedcertain new and useful Improvements in Engravers Tools; and I do declarethe following to be a full,clear, and exact description of theinvention, such as will enable others skilled in the art to which it ap-'IO pertains to make and use the same, reference being had to theaccompanying drawings, and to the letters and figures of referencemarked thereon, which form a part of this specification.

This invention relates to engravers tools, and embodies an implement inwhich a scraper and burnisher are provided on a single handle or stockand the operating-edges are proserved in good condition by a protectingcap or caps.

In the accompanying drawings, which illustrate my invention, Figure 1shows in side elevation an implement embodyingmy invention, showing thecaps detached, their position when applied being indicated in dottedlines. Fig. 2 shows an edge view of the implement with the caps removed.

A steel rod or bar 1 is provided on one end with an arrow-shapedburnisher 5, tapering to a sharp point and being substantially pyramidalin shape, as will be understood from an inspection of Figs. 1 and 2. Theother end of the rod is provided with three longitudinal grooves 6 6,producing three 3 5 edges at their lines of intersection. The shape incross-section produced by the grooves is that of a four-pointed star,which permits of ready grinding or sharpening of the scraper and theproduction of a very fine and even scraping edge on the bounding linesof the surfaces 4 at the tip. A sleeve of hard rubber or other suitablematerial is forced on the steel bar, or is otherwise secured thereto,and occupies, when in place, a central position on the bar. The centralportion 3 of this sleeve is milled or otherwise suitably roughened tomake a gripping-surface for the fingers, and the sides 2 are reduced topermit caps 7 8 being crowded on the ends to occupy positions as shownin Fig. 1. Two caps may be used, as shown, or one may be dispensed with,the other being fitted to cover the burnisher when scraping, and beingplaced over the scraper when the" tool is thrown on the bench or table.

The tool described is designed for usein steelengraving, the scraperbeing used to scrape out a false line and the burnisher to polish thesteel surface after the line has been removed from the plate. Muchdifficulty is experienced among engravers in preserving a sharp edge onthe tools herein mentioned, and especially on the scraper. This isprincipally due to a roughening of the edges by abrasion in beingknocked against other tools on the table where the scraper is thrownwhen not in use. A slight roughening of its edge renders resharpeningnecessary before it is fit for further use. Frequent regrinding is thusrequired-an operation which takes considerable time and requires someskill, as the edges must be both smooth and sharp. The caps preventdamage to the edges, except such as is due to wear. The point of theburnishing-tip is also dulled by contact with 7 5 other tools.

The scraper and burnisher are two tools which are used in consecutiveorder by an engraver, and are very often employed. The advantages ofcombining them in a single implement is therefore apparent. No time islost by the operator in searching for another tool or in looking for theline being operated upon after such search. When the steel surface isready for the burnisher, he has but to reverse the implement in hishand.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. An engravers tool having a burnish- 9o ing-edge and a scraping-edge,both of metal, on opposite ends of the same handle or stock and providedwith a cap or hood to protect either edge when not in use, said capfitting on a suitable cooperating shoulder on the tool.

2. An engravers tool consisting of a single In testimony whereof I affixmy signature in piece of steel having one end shaped into a presence oftwo Witnesses. scraper and the other end into a burnishel',

and a protecting cap 01' caps to cover the GEORGE A. MASON. 5 ends, saidcap 01' caps fitting 0n (Jo-operating \Vitnesses:

shoulders on the tool, as and for the purpose ROBT. II. READ,

set forth. H. B. ZEVELY.

